High Energy Activity of the Super-Massive Black Hole at the Galactic Center

TL;DR

Recent advancements in high-energy telescopes have enabled the detection of X-ray, gamma-ray, and TeV emissions from the super-massive black hole at the galactic center, revealing new insights into its energetic activity.

Contribution

This paper reviews recent observational results from advanced telescopes that detect high-energy emissions from Sgr A*, highlighting new discoveries in its energetic phenomena.

Findings

Detection of X-ray flares with Chandra and XMM-Newton

Observation of soft gamma-ray emission with INTEGRAL

Revelation of TeV emission from the galactic center by HESS

Abstract

The centre of our galaxy hosts the nearest super-massive black hole to the solar system, identified to the compact radio source Sgr A*. High energy experiments have tried in the past to detect the X/gamma-ray emission expected from the accretion of the surrounding material into this super-massive black hole. Only recently however, thanks to the new generation of telescopes, it has been possible to reveal high energy radiation associated with Sgr A* or its close environment. I will review and discuss in particular the results on the Sgr A* X-ray flares discovered with Chandra and XMM-Newton, on the central soft gamma-ray source detected with INTEGRAL and on the galactic centre TeV emission revealed by HESS.